Abstract: Provided is an organic electroluminescent device. The organic electroluminescent device comprises an anode, a cathode and an organic layer disposed between the anode and the cathode, wherein the organic layer comprises a first organic layer, the first organic layer contains a first organic material and a second organic material that satisfy particular energy level requirements, and the first organic layer has a conductivity greater than or equal to 3×10?5 S/m. The novel organic electroluminescent device effectively controls a hole injection ability so that the overall performance of the device is effectively improved. Further provided are an organic electroluminescent device and a first organic electroluminescent device.

Abstract: Provided are an organic electroluminescent material and a device thereof. The organic electroluminescent material includes a metal M and at least one C{circumflex over (?)}N bidentate ligand La coordinated with the metal M, the maximum emission wavelength of the photoluminescence spectrum of the organic electroluminescent material at room temperature is greater than or equal to 410 nm and less than or equal to 700 nm, and the emission spectrum area ratio of the organic electroluminescent material is less than or equal to 0.145. The metal complex has significant advantages in organic electroluminescent devices, in particular the improvement of device efficiency. Further provided are an organic electroluminescent device including the metal complex and a compound composition including the metal complex.

Abstract: Provided are an organic electroluminescent material and a device comprising the same. The organic electroluminescent material is a metal complex comprising a ligand La having a structure of Formula 1A and a ligand Lb having a structure of Formula 1B. Such new compounds each have a lower evaporation temperature, which is conducive to industrial application of the material and can reduce energy consumption in industrialization. Such metal complexes are used as a light-emitting material in an electroluminescent device. When applied to the electroluminescent device, such metal complexes can provide very excellent device performance, especially an improved device lifetime. Further provided are an organic electroluminescent device comprising the metal complex and a compound composition comprising the metal complex.

Abstract: An organic light-emitting material contains a 6-silyl-substituted isoquinoline ligand. The organic light-emitting material is a metal complex containing a 6-silyl-substituted isoquinoline ligand and may be used as a light-emitting material in a light-emitting layer of an organic electroluminescent device. These new complexes can provide redder and saturated emission and meanwhile demonstrate a significantly improved lifetime and efficient and excellent device performance. Further disclosed are an electroluminescent device and a compound formulation including the metal complex.

Abstract: Organic electroluminescent materials and devices are disclosed. The organic electroluminescent materials are novel benzodithiophene or its analogous structure compounds, which can be used as charge transporting materials, hole injection materials, or the like in an electroluminescent device. These novel compounds can offer excellent performance compared with existing materials, for example, to further improve the voltage, efficiency and/or lifetime of the OLEDs.

Abstract: The device provided herein is an organic electroluminescent device and includes a substrate; a first electrode on the substrate and with high reflectivity; a translucent or transparent second electrode over the first electrode; and a first, a second and a third organic layer included between the first and the second electrode; where the second organic layer has a thickness >80 nm and is made of a second organic material; the third organic layer is a light-emitting layer including at least one light-emitting material and at least one host material; the first organic layer has a conductivity >1×10?4 S/m and <1×10?2 S/m; an energy level difference between HOMO energy level of the second organic material and HOMO energy level of the at least one host material is <0.27 eV; and the first electrode and the second organic layer are in direct contact with the first organic layer.

Abstract: Provided is an electroluminescent device. The electroluminescent device includes an anode, a cathode and an organic layer disposed between the anode and the cathode, where the organic layer includes at least a first compound having a structure of H-L-E and a second compound having a general formula of M(La)m(Lb)n(Lc)q. The novel material combination consisting of the first compound and the second compound can enable the electroluminescent device to obtain a lower voltage, higher efficiency and an ultra-long lifetime and can provide better device performance. Further provided are a display assembly and a compound combination.

Abstract: Provided is an electroluminescent device. The organic electroluminescent device comprises an anode, a cathode and an organic layer disposed between the anode and the cathode, where the organic layer comprises a first compound having a structure of H-L-E and a second compound comprising a ligand La having a structure of Formula C. Such a new material combination consisting of the first compound and the second compound can obtain higher efficiency in the device, significantly extend a lifetime, and provide better device performance. Further provided are a display assembly comprising the electroluminescent device and a compound combination.

Abstract: Provided is a light-emitting material having a polycyclic ligand. The light-emitting material is a novel metal complex comprising a polycyclic ligand having a structure of Formula 1 and may be used as light-emitting material in an electroluminescent device. These novel metal complexes can greatly red-shift the maximum emission wavelengths of electroluminescent devices and significantly adjust emitting colors of the devices and have very narrow emission spectra and can greatly improve the luminescence saturation of the devices and provide better device performance. Further provided are an electroluminescent device and a compound combination.

Abstract: Provided are an organic electroluminescent material and a device thereof. The organic electroluminescent material is a metal complex comprising a ligand La having a structure of Formula 1. The metal complex may be used as a light-emitting material in an electroluminescent device. These novel compounds may be applied to electroluminescent devices and can exhibit better performance, achieve higher device efficiency, and significantly improve the overall performance of the devices. Further provided are an electroluminescent device comprising the metal complex and a compound combination comprising the metal complex.

Abstract: Provided is an electroluminescent device. The organic electroluminescent device comprises an anode, a cathode and an organic layer disposed between the anode and the cathode, where the organic layer comprises a first compound having a structure of H-L1-E and a second compound having a general formula of M(La)m(Lb)n(Lc)q, and the device has at least one maximum emission wavelength greater than 630 nm. Such a new material composition consisting of the first compound and the second compound can be used in a light-emitting layer of the electroluminescent device. The new material composition can achieve the emission of deep red light in the device, significantly reduce a drive voltage of the device while significantly improving device efficiency and/or a device lifetime, and provide better device performance. Further provided is a display assembly.

Abstract: Provided are an organic electroluminescent material and a device thereof. The organic electroluminescent material is a metal complex comprising a ligand La having a structure of Formula 1. The metal complex may be used as a light-emitting material in an electroluminescent device. These new compounds may be applied to electroluminescent devices and can exhibit better performance, achieve higher device efficiency, and significantly improve the overall performance of the devices. Further provided are an electroluminescent device comprising the metal complex and a compound combination comprising the metal complex.

Abstract: Provided are an organic electroluminescent material and a device thereof. The organic electroluminescent material is a metal complex including a ligand La having a structure of Formula 1, and the metal complex can be used as luminescent materials in electroluminescent devices. These new compounds, when used in electroluminescent devices, can show better performance, provide lower device voltage and higher device efficiency, and significantly improve the comprehensive performance of devices. Further provided are an electroluminescent device including the metal complex and a compound composition including the metal complex.

Abstract: Provided is a luminescent material having a polycyclic ligand. The luminescent material is a new metal complex having a polycyclic ligand and may be used as luminescent materials in electroluminescent devices. These new metal complexes achieve red light emission, have a very narrow full width at half maximum, and can achieve high saturation luminescence. In addition, these new metal complexes, when used as luminescent materials in electroluminescent devices, can achieve red light emission, have a very narrow full width at half maximum, achieve high saturation luminescence, reduce or maintain a low voltage, greatly improve device efficiency and lifetime, and provide better device performance. Further provided are an electroluminescent device and a compound composition.

Abstract: Disclosed is an organic light-emitting material including a 3-deuterium-substituted isoquinoline ligand. The organic light-emitting material is a metal complex including a 3-deuterium-substituted isoquinoline ligand and an acetylacetonate ligand, which can be used as a light-emitting material in a light-emitting layer of an organic electroluminescent device. These novel complexes can effectively prolong device lifetime. Further disclosed is an electroluminescent device including the metal complex and a compound formulation.

Abstract: Disclosed is an organic electroluminescent device. The organic electroluminescent device comprises an anode, a cathode and a first organic layer disposed between the anode and the cathode, wherein the first organic layer contains a first compound having a structure of Formula 1 and a second compound having a structure of Formula 2. Such a novel material combination composed of the first compound and the second compound may be used in a hole injection layer in the organic electroluminescent device and can endow the organic electroluminescent device with excellent characteristics of low voltage, high efficiency and a long lifetime and provide better device performance. Further disclosed are a display assembly and a compound combination.

Abstract: An organic compound having the structure of Formula (I), shown below, is disclosed. When used in a hole injection layer or a hole transporting layer, it can greatly improve the balance of electron holes and electron transporting of a device, thereby bringing excellent device effects, for example, improving the efficiency and lifetime of a device. At the same time, it also achieves a good effect when the organic compound having the structure of Formula (I) is used as a P-type conductive doping material in a charge generation layer of a multi-layer OLED device.

Abstract: Provided is a stacked organic electroluminescence device. At least one light-emitting unit of the stacked organic electroluminescent device includes an organic layer including a specific combination of a P-type material with a deep LUMO energy level and a hole transporting material with a deep HOMO energy level. Meanwhile, a P-type material is used as the buffer layer of the charge generation layer between the light-emitting units. The device can offer better device performance and more simplified fabrication process. Further provided is a display assembly including the device.

Abstract: Provided is an electroluminescent device. The organic electroluminescent device comprises a first metal complex comprising a ligand La having a structure of Formula 1, a first compound having a structure of Formula 2 and a second compound having a structure of Formula 3. Compared to the related art, such a compound composition can significantly improve the performance of the organic electroluminescent device, especially significantly extend a device lifetime, and finally significantly improve the overall performance of the device. Further provided are an electronic device comprising the electroluminescent device and a compound composition comprising the first metal complex, the first compound and the second compound.

Abstract: Organic electroluminescent materials and devices are disclosed. The organic electroluminescent materials are novel benzodithiophene or its analogous structure compounds, which can be used as charge transporting materials, hole injection materials, or the like in an electroluminescent device. These novel compounds can offer excellent performance compared with existing materials, for example, to further improve the voltage, efficiency and/or lifetime of the OLEDs.